package com.cy.pj.goods.service;

import com.cy.pj.goods.dao.GoodsDao;
import com.cy.pj.goods.pojo.Goods;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.util.List;

/**
 * 1)通过数据层对象访问业务数据
 * 2)通过日志对象记录日志
 * 3)通过第三方框架进行权限控制
 */
@Service
public class GoodsServiceImpl implements GoodsService{
    @Autowired
    private GoodsDao goodsDao;

    private static final Logger log = LoggerFactory.getLogger(GoodsServiceImpl.class);

    @Override
    public List<Goods> findGoods() {
        long t1 = System.currentTimeMillis();
        log.info("start,{}",t1);
        List<Goods> list = goodsDao.findGoods();
        long t2 = System.currentTimeMillis();
        log.info("end,{}",t2);
        log.info("execute time,{}",(t2-t1));
        return list;
    }

    @Override
    public int deleteById(Integer id) {
        if(id==null || id<1){
            throw new IllegalArgumentException("传入的ID值不合法"); //运行时异常
        }else {
            long t1 = System.currentTimeMillis();
            log.info("start,{}",t1);
            int rows = goodsDao.deleteById(12);
            long t2 = System.currentTimeMillis();
            log.info("end,{}",t2);
            log.info("execute time,{}",(t2-t1));
            return rows;
        }
    }
}
